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Permeability of untreated and atmospheric plasma treated coconut fiber mats
(2019-07-19)
Composites manufactured by resin transfer molding depend on appropriate processing parameters to ensure adequate reinforcement-matrix adhesion. Permeability predicts the fluid flow resistance through reinforcement. The ...
Influence of Nozzle Shape on the Performance of Low-Power Ar Plasma Jet
(Ieee-inst Electrical Electronics Engineers Inc, 2015-09-01)
The influence of nozzle geometry on the properties of atmospheric-pressure Ar plasma jet was investigated. Three different nozzle types were tested: 1) a tapered nozzle (to get a thin plasma plume); 2) a straight nozzle ...
Investigations on the stability of plasma modified silicone surfaces
(Kluwer Academic/plenum Publ, 2004-03-01)
In this work it was investigated the effect of the exposure to different plasmas on the wettability of silicone samples. We have observed that oxygen. argon, and hydrogen glow discharges are quite effective in reducing the ...
Corrosion Behavior of Plasma Nitrided and Nitrocarburised Supermartensitic Stainless Steel
(Univ Fed Sao Carlos, Dept Engenharia Materials, 2018-01-01)
Supermartensitic stainles steels (SMSS's) are a new generation of martensitic steels that have been increasingly used in oil and gas applications due to their adequate corrosion resistance and mechanical properties. In the ...
Experimental study on treatment of simulated radioactive waste by thermal plasma: Temporal evaluation of stable Co and Cs
(2021-09-15)
Thermal plasma technology is a process that demonstrates high performance for the processing of different types of waste. This technology can also be applied in the treatment of radioactive wastes, which requires special ...
Plasma Treatment of Crosslinked Polyethylene Tubes for Improved Adhesion of Water-based Paints
(Univ Fed Sao Carlos, Dept Engenharia Materials, 2019-01-01)
Cold plasmas fed trichloromethane-argon mixtures were used to treat cross-linked polyethylene (PE) to improve the adhesion of water-based paint. The effects of the plasma treatment undertaken at different percentages of ...
Study of modified area of polymer samples exposed to a he atmospheric pressure plasma jet using different treatment conditions
(2020-05-01)
In the last decade atmospheric pressure plasma jets (APPJs) have been routinely employed for surface processing of polymers due to their capability of generating very reactive chemistry at near-ambient temperature conditions. ...
Nano-modification of Si-wafer surfaces using low-cost ambient air diffuse plasma
(2015-01-01)
In this paper, we demonstrated the cleaning and nano-oxidation of Si-wafer surfaces by atmospheric pressure plasma, generated in ambient air using diffuse coplanar surface barrier discharge. Plasma treatment for one second ...
Properties of hydrogenated amorphous carbon films deposited by PECVD and modified by SF6 plasma
(Elsevier B.V. Sa, 2011-11-15)
Hydrogenated amorphous carbon (a-C:H) films were grown at room temperature on glass and polished silicon substrates using RF-PECVD (Radio-Frequency Plasma Enhanced Chemical Vapor Deposition). Plasmas composed by 30% of ...
Plasma treatment of polyamide fabric surface by hybrid corona-dielectric barrier discharge: Material characterization and dyeing/washing processes
(2020-01-01)
In this study, the hybrid corona-dielectric barrier discharge plasma treatment was employed to modify the physical, chemical and morphological characteristics of a half-knitted fabric composed of 92% polyamide 6.6 and 8% ...